cicd

guildmaster's CI/CD lane, layered on `agex pr`. Delegates lint / open / read / reply / delta to agex; adds two extensions — `status` (SonarCloud quality gate + hotspots + unresolved-thread tally) and `await` (read --wait + status with non-zero exit on Sonar ERROR or unresolved threads). Use when: creating PRs in guildmaster, handling review feedback, polling CI status, or the user says "create PR", "review comments", "address feedback", "resolve threads". Renamed from `pr-review` in steward 0.7.0; rebased on agex in 0.12.0.